... 3,Safe and effective device. 4,CE,RoHs,FCC 3 in 1 Multifunction Portable Ultrasound and LED Skin Rejuvenation Equipment. Brief description:With ... Different light have following functions:Red Light: wavelength 625±3nm 12 LED activate cells, promote the formulation of collagen Green ... and good credit, we have achieved big success both in home and abroad market.We have cooperated with the companies from ...